cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A250668 Number of (n+1) X (n+1) 0..3 arrays with nondecreasing x(i,j)+x(i,j-1) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction.

Table of values

n a(n)
1 104
2 5154
3 388916
4 41503790
5 5803025694
6 1009432228498
7 210335029800118

List of values

[104, 5154, 388916, 41503790, 5803025694, 1009432228498, 210335029800118]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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